What is RDW?
RDW is the abbreviation of “Red Cell Distribution Width”. The German medical term is erythrocyte distribution width (EVB). This describes in the course of a blood test, how strong the deviation of the size of the red blood cells is.
The RDW value is recorded on the result of a blood sample. If it is too low or too high, it is usually highlighted in color. As the red blood cells (erythrocytes) no longer change their size after maturation, deviations of the RDW may indicate diseases.